Change style in application

[Julien]

Hi!
I'm new here, and I just wanted to know how to change the "style" of a WPF application(e.g. for windows7, office_blue, ...?) like in demo? I don't need it at runtime.

I've VS2010 with the telerik rad controls for wpf installed(not the trial)

Thank you!

[Rossen Hristov]

Hi Julien,

This should get you started. Let us know if there are any problems.

All the best,
Ross
the Telerik team

[Julien]

But is there a way to do it application wide in the xaml file?Because I see only instance specific for xaml.

Thanky you

[Rossen Hristov]

Hello Julien,

You can set it like this:

using System.Windows;
using Telerik.Windows.Controls;

namespace FilteringControlStyle
{
    /// <summary>
    /// Interaction logic for App.xaml
    /// </summary>
    public partial class App : Application
    {
        protected override void OnStartup(StartupEventArgs e)
        {
             base.OnStartup(e);
             StyleManager.ApplicationTheme = new VistaTheme();
        }
    }
}

I hope this helps.

Regards,
Ross
the Telerik team

[Julien]

Okay, so no way to put this in Xaml file?

[Rossen Hristov]

Hello Julien,

There is no way. You can set instance-specific built-in theme in XAML, but not the ApplicationTheme. Where would you put it?

Regards,
Ross
the Telerik team

[Julien]

Why not as a property of the Application element?

Because doing thing like that doesn't permit to visualize how is the application during the dev.

[Rossen Hristov]

Hello Julien,

You can not do that. Try it and see what the XAML parser will tell you.

All the best,
Ross
the Telerik team

[Daniel Schilling]

Hi,

Julien wrote:
"Because doing thing like that doesn't permit to visualize how is the application during the dev. "

This is also important for me, especially for "blendability". We develop with MVVM and a team of developers and designers. Our designer complains about this: he doesn't see his result in Expression Blend 4, because Blend doesn't evaluate app.xaml.cs. So he can't get his job done - styles and templates must be declared more than once and a "theme" must be reinvented via styles and templates.

Is there a "blendable" way of declaring an application-wide theme?

Thanks,
Daniel

[Julien]

And actually it seems it doesn't work because I instantiate my Windows on application code behind:

public App():base()
{
   MainWindow windows = new MainWindow();
   LoadFlowManager(windows);//Custom method to manage some usercomponent flow
   this.Run(windows);
}

[Miroslav]

Hello Daniel Schilling,

Unfortunately there is no easy way to see the runtime theme in design-time. 

One way will be to have the theme's xaml in your application resources or assigning styles as a local value. This may not be easy to maintain though.

Sincerely yours,
Miroslav
the Telerik team